Termination

The vent terminal should be vertical and should termi- nate outside the building at least 2 ft above the high- est point of the roof that is within 10 ft. The vent cap should have a minimum clearance of 4 ft horizontally from and in no case above or below (unless a 4 ft hori- zontal distance is maintained) electric meters, gas me- ters, regulators and relief equipment. The distance of the vent terminal from adjacent public walkways, adja- cent buildings, open windows and building openings must be consistent with the NFGC (U.S.) or B149.1 (Canada). Gas vents supported only by flashing and extended above the roof more than 5 ft should be se- curely guyed or braced to withstand snow and wind loads.

CAUTION: A listed vent cap terminal, adequately sized, must be used to evacuate the flue products from the heaters.

Common Venting System

Manifolds that connect more than one heater to a com- mon chimney must be sized to handle the combined load. Consult available guides for proper sizing of the manifold and the chimney. At no time should the area of the common vent be less than the area of the largest heater exhaust outlet.

WARNING: Vent connectors serving appliances vented by natural draft shall not be connected into any portion of mechanical draft systems operating under a positive pressure.

CAUTION: Vent connectors for natural draft vent- ing systems must be Type B or better.

Common venting systems may be too large once an existing unit is removed. At the time of removal of an existing appliance, the following steps must be fol- lowed with each appliance remaining connected to the common venting system placed in operation, while the other appliances remaining connected to the common venting system are not in operation.

1.Seal any unused opening in the common venting system.

2.Visually inspect the venting system for proper size and horizontal pitch and verify there is no block- age, restriction, leakage, corrosion or other unsafe condition.

3.Insofar as is practical, close all building doors and windows and all doors between the space in which the appliances remaining connected to the com- mon venting system are located and other spaces of the building. Turn on clothes dryers and any ap- pliance not connected to the common vent sys- tem. Turn on any exhaust fans, such as range hoods and bathroom exhausts, at maximum

 

 

Certified

 

Vertical Venting

Combustion Air

Air Inlet

 

 

Model

Venting

Vent Size

Height*

Intake Pipe

Max. Length**

 

 

 

Material

 

Min.

Max.

Material

6”

8”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

302A

 

5”

 

 

 

100’

N/A

 

 

 

 

 

 

 

 

 

 

402A

 

6”

 

 

Galvanized Steel,

 

 

 

 

 

 

 

 

 

Cat. I

 

 

 

 

 

 

502A

 

 

75’

 

 

 

 

 

 

PVC,

 

 

 

(Type B

 

5’

25’

 

 

 

652A

 

ABS,

 

 

 

 

Equivalent)

 

 

 

 

 

 

 

 

 

 

CPVC

 

100’

 

 

752A

 

8”

 

 

40’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

902A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Vent lengths are based on a lateral length of 2 ft. Refer to the latest edition of the NFGC for further details. When vertical height exceeds 25 ft, consult factory prior to installation.

** Subtract 10 ft per elbow. Max. 3 elbows.

Maximum combustion air duct length terminated at 100 equivalent ft.

Table L: Category I Vertical Venting

29

Page 28 Page 30
Page 29
Image 29
Raypak 302A-902A manual Termination, Common Venting System, Model Venting Vent Size Height Intake Pipe Max. Length, Min Max
Page 28 Page 30

302A-902A specifications

The Raypak 302A-902A is a highly regarded pool and spa heater, known for its efficiency and reliability in delivering warmth to residential and commercial aquatic applications. This heater stands out due to its robust design, advanced technology, and user-friendly features.

One of the key characteristics of the Raypak 302A-902A is its dual fuel capability, which means it can run on either natural gas or propane. This flexibility allows users to choose their preferred fuel type, contributing to operational efficiency and cost-effectiveness. With a BTU output ranging from 302,000 to 902,000, the Raypak heater is capable of quickly heating large volumes of water, making it ideal for pools, spas, and hot tubs.

The heater incorporates advanced technology such as a stainless steel heat exchanger, which not only ensures excellent thermal conductivity but also promotes durability against corrosion. This is especially advantageous in harsh environments, where exposure to chemicals can significantly impact the lifespan of traditional copper heat exchangers. The Raypak 302A-902A's heat exchanger is designed to withstand the rigors of constant use while maintaining high performance levels.

Another prominent feature of the Raypak 302A-902A is its digital display control system, which simplifies the operation and monitoring of the heater. Users can easily set and adjust temperatures, as well as access diagnostic information, all through an intuitive interface. This digital control not only enhances user experience but also aids in the timely maintenance of the unit.

Energy efficiency is another major selling point of the Raypak 302A-902A. The heater is designed with environmentally friendly practices in mind, utilizing a low NOx burner that minimizes harmful emissions. This not only meets environmental regulations but also makes it a greener alternative for heating needs.

In terms of installation, the compact design of the Raypak 302A-902A allows for versatile placement options, whether in a residential backyard or a commercial environment. Its user-friendly installation process ensures that homeowners and businesses alike can enjoy the benefits of heated water with minimal hassle.

Overall, the Raypak 302A-902A is an exemplary choice for anyone seeking a high-quality, efficient, and flexible pool and spa heating solution. Its combination of robust engineering, advanced technology, and user-focused features solidifies its position as a leader in the market, promising effective heating for years to come. Whether for personal enjoyment or commercial use, this heater delivers exceptional performance that meets diverse heating needs.
Top Page Image Contents